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Third Generation's current lineup

Third Generation's starting lineup

Second Generation's final lineup

2017 lineup

Second Generation's starting lineup

First Generation's final lineup

2012 lineup

First Generation's starting lineup

BiS, also known as Brand-new idol Society (Shinsei Idol Kenkyuukai, 新生アイドル研究会), is a Japanese idol group founded in 2010 by Pour Lui and Watanabe Junnosuke.

They are considered the flagship group of WACK, and have since had multiple reboots.

There are currently three incarnations of BiS:

  • The first generation (known as "Original BiS"), was active from late 2010 and disbanded on July 8, 2014.
  • The third generation is the current line-up of BiS, and was revealed exactly one month after the disbandment of second-generation BiS.

As of WACK ROCKiN' PARTY, most groups have been given representative colours, as used in their costumes. BiS' colour is Orange Penlight.png orange.


Past members


First Generation


BiS was initially founded on December 9, 2010. The very first members were Pour Lui, Nakayama Yukiko, Yokoyama Rina and Hirano Nozomi.

On January 11, BiS' first digital single, Taiyou no Jumon, was released, making it their first release overall.

BiS' first album, Brand-new idol Society, was released on March 23.

On June 24, Yokoyama Rina withdrew from BiS.

On July 9, Rina was replaced by Terashima Yufu.

BiS' debut single, My Ixxx, was released on August 3.

On December 30, Nakayama Yukiko graduated from BiS.


On April 11, 2012, BiS released their last indies single, IDOL.

Shortly after IDOL's release, BiS signed to major label Avex Trax and two more members, Michibayashi Rio and Wakisaka Yurika, were added to the group on April 15.

On July 18, BiS released their major debut single, PPCC, followed by their second studio album, IDOL is DEAD, on October 10.


Wakisaka Yurika graduated from BiS on March 16.. Terashima Yufu also withdrew from the group on May 26, and the same day, three new members, First Summer Uika, Tentenko and Kamiya Saki, were added.

Michibayashi Rio graduated from BiS on September 22. On November 19, she was replaced by Koshouji Megumi.

On March 5, BiS' first generation released their final studio album, WHO KiLLED IDOL?, followed by their last single, FiNAL DANCE / nerve.

BiS' first generation disbanded on July 8, and the group remained inactive for the next two years.

Second Generation


On July 8, Exactly two years after BiS disbanded, Pour Lui announced that she would be reforming the group with new members. From August 31 to September 4, a live-streamed audition boot camp for new members was held, resulting in Go Zeela, Kika Front Frontale, Aya Eightprince and Peri Ubu joining the group.

The first studio album of BiS' second generation, Brand-new idol Society 2, was released on November 16.


On April 2, Pan Luna Leafy and Momoland joined BiS. First generation member Kamiya Saki also rejoined the group, as part of a temporary trade with Aya Eightprince, who had been transferred to her current group, GANG PARADE.

BiS' second generation released their first single, SOCiALiSM, on May 31.


On March 4, first-generation members Pour Lui and Kamiya Saki left BiS, and Aya Eightprince rejoined.

On March 18, Muropanako, Nel Nehru, Toriaez Hana, Mewclub and YUiNA EMPiRE joined the group, and BiS was split into two groups, BiS 1st, and BiS 2nd.

Momoland withdrew from BiS on April 20, and the same day, a competitive system, BiS.LEAGUE, was introduced; In votes given by fans, the highest-ranking members of BiS would be transferred to BiS 1st, and low-ranking members to BiS 2nd. This system continued until December 29, when BiS was united into a single group again. However, Aya Eightprince, Toriaez Hana, Nel Nehru, Muropanako and YUiNA EMPiRE were threatened with removal from the group due to their poor BiS.LEAGUE rankings.


On July 1, Nel Nehru left BiS, just a few days after being placed on probation.

From March 24 to 30, the remaining probation members took part in the WACK AUDiTiON CAMP 2019, under the condition that anyone who was eliminated from the audition would also be fired, resulting in the removals of Aya Eightprince and Toriaez Hana. In response, the remaining members of BiS announced that all members were to graduate from the group.

On May 11th, BiS' second generation disbanded.

Third Generation


On March 30, 2019, at the same time that the second generation announced their disbandment, Watanabe Junnosuke announced that he would be holding closed auditions for a third generation of BiS.

The starting lineup was revealed exactly one month after the second generation's disbandment, and was made up of Manako Chiii ManakoChantmonkeeNeo TreesToggy and Ito Musensiteebu

BiS' third generation officially debuted at Tokyo Idol Festival on August 4.

On August 13, Manako Chiii Manako suddenly withdrew from BiS. The following day, BiS' third generation released their first studio album, Brand-new idol Society (named after the debut album of the first generation).

On September 30, Manako Chiii Manako's replacement, Zuzu Death, was added to the group. However, she also withdrew just a week after her reveal.

BiS' third generation released their first single, DEAD or A LiME, on November 20.


The third generation's second album, LOOKiE, was released on February 5. It was followed up by ANTi CONFORMiST SUPERSTAR on August 19.

On November 25, BiS released a compilation album, "Propaganda" to "PROPAGANDA", based on a fan vote of songs released by the third generation so far.


BiS released the EP, KiLLiNG IDOLS, on February 24. It was followed up by the single, TOUCH ME / LOVE.

In early April, it was announced that AKB48 member Kashiwagi Yuki would be joining BiS sometime in the near future. Further details were released the following month, where it was announced that she would release a single with BiS (and the six other main WACK units) on August 31. The single, Kashiwagi Yuki Nari no BiS-ANYTiME ANYTHiNG-, was later delayed to November 30th, due to Yuki requiring surgery.

On November 4th, a new full-time member, Nano3 joined, ending their 2-year stable line-up. They then released the album, BiS DiVE into ROCKS on December 1st.


Toggy went on indefinite hiatus from BiS on February 18th, bringing the group back down to a four-piece. Soon after, they released their next single, DA DA DA DANCE SONG (with Toggy's vocals still included, as it had been recorded prior).

With four members, BiS released two more singles; BELiEVE on April 22nd, and Hey boy hey girl on July 6th.

Soon after the release of Hey boy hey girl, Chantmonkee announced her graduation, ultimately leaving BiS on July 18th. The following month, on August 6th, Toggy's hiatus ended and she resumed performing with the group


Music Videos



Live Video



Other Video



  • [2013.01.06-2014.07.05] BiS no Vision? (ビスのビッスン?)
  • [2018.07.18-2019.03.20] BiS no Honne or DIE (BiSの本音 or DIE; BiS' True Intentions or DIE)
  • [2019.09.17] BiS no PARK LiFE



Card Game



  • BiS are often credited with helping to initiate the mid-2010s alt-idol boom.
  • Not to be confused with the British rock band bis or the visual-kei group BIS (Believe In Style)
  • Are the only WACK unit to have their own series of movies and anime.
  • Part of Pour Lui's motivation to reform BiS was out of jealousy over how their successors BiSH had become much more famous.